Add m-esr52 at 52.6.0

1 files changed, 39 insertions, 0 deletions

diff --git a/browser/base/content/test/general/browser_hide_removing.js b/browser/base/content/test/general/browser_hide_removing.js
new file mode 100644
index 000000000..be62e2d89
--- /dev/null
+++ b/browser/base/content/test/general/browser_hide_removing.js
@@ -0,0 +1,39 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Bug 587922: tabs don't get removed if they're hidden
+
+function test() {
+  waitForExplicitFinish();
+
+  // Add a tab that will get removed and hidden
+  let testTab = gBrowser.addTab("about:blank", {skipAnimation: true});
+  is(gBrowser.visibleTabs.length, 2, "just added a tab, so 2 tabs");
+  gBrowser.selectedTab = testTab;
+
+  let numVisBeforeHide, numVisAfterHide;
+  gBrowser.tabContainer.addEventListener("TabSelect", function() {
+    gBrowser.tabContainer.removeEventListener("TabSelect", arguments.callee, false);
+
+    // While the next tab is being selected, hide the removing tab
+    numVisBeforeHide = gBrowser.visibleTabs.length;
+    gBrowser.hideTab(testTab);
+    numVisAfterHide = gBrowser.visibleTabs.length;
+  }, false);
+  gBrowser.removeTab(testTab, {animate: true});
+
+  // Make sure the tab gets removed at the end of the animation by polling
+  (function checkRemoved() {
+    return setTimeout(function() {
+      if (gBrowser.tabs.length != 1) {
+        checkRemoved();
+        return;
+      }
+
+      is(numVisBeforeHide, 1, "animated remove has in 1 tab left");
+      is(numVisAfterHide, 1, "hiding a removing tab is also has 1 tab");
+      finish();
+    }, 50);
+  })();
+}